CN101931460A - Link fault detection method, device and system - Google Patents
Link fault detection method, device and system Download PDFInfo
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- CN101931460A CN101931460A CN2009101082559A CN200910108255A CN101931460A CN 101931460 A CN101931460 A CN 101931460A CN 2009101082559 A CN2009101082559 A CN 2009101082559A CN 200910108255 A CN200910108255 A CN 200910108255A CN 101931460 A CN101931460 A CN 101931460A
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- pon terminal
- link information
- olt
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0791—Fault location on the transmission path
Abstract
The invention provides a link fault detection method, a device and a system, wherein the method comprises the following steps: leading a PON terminal device to receive a broadcast message sent by an OLT, wherein the broadcast message carries connection information, a mark of a station located by the OLT, the mark of a frame or a trench located by the OLT and the mark of a port which is connected with the PON terminal device on the OLT; and obtaining the connection information in the broadcast message, and judging whether the obtained connection information is consistent with the pre-configured connection information or not, if so, judging whether the PON terminal device is firstly opened or not, if not, determining that a fault occurs in a link. The method is simple and easy to operate and can quickly detect the fault in the link.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of link failure detection method, device and system.
Background technology
PON (Passive Optical Network, EPON) in the system, OLT (Optical LineTermination, optical line terminal) and ONU (Optical Network Unit, optical network unit) arrive the network architecture of multiple spot between for point, promptly an OLT can link to each other with a plurality of ONU equipment.ODN between OLT and the ONU (Optical Distribution Network, Optical Distribution Network) network can adopt optical splitter usually.In the actual application, tend to and to be placed on same place with the optical splitter that different OLT ports link to each other, the service engineer is difficult to judge the situation that branch's jumping fiber of optical splitter links to each other with the OLT port, effort and consuming time when judging circuit question and plant issue when safeguarding.
As shown in Figure 1, optical splitter 103 and optical splitter 107 are placed on same place, connect OLT100 and OLT105 respectively, the ONU109 that links to each other with optical splitter 103 is because connection error, directly linked above the optical splitter 107, cause ONU109 normally on OLT100, to register, the attendant finds that ONU109 can't register, when safeguarding at the scene, because the jumping fiber that comes out from optical splitter 103 and optical splitter 107 is all the same, can't directly judge is that jumping fiber is jumped wrong, or the problem of equipment, in this case, often need interrupting service, the inspection of the carrying out whole ODN network place of just pinpointing the problems, like this, effort and consuming time, and because professional interruption has influenced user experience.
Summary of the invention
For the easy connection failure condition to the optical fiber between local side apparatus and the terminal equipment detects, the embodiment of the invention provides a kind of link failure detection method, device and system.
One embodiment of the invention provides a kind of link failure detection method, comprising:
The passive optical network PON terminal equipment receives the broadcast that optical line terminal OLT sends, and described broadcast is carried the link information that described PON terminal equipment is connected with described OLT;
Obtain the link information in the described broadcast, and judge whether the link information of being obtained is consistent with local pre-configured link information, if inconsistent, judges that then whether described PON terminal equipment is for open-minded first, if, judge that then there is fault in described link for not.
One embodiment of the invention provides a kind of passive optical network PON terminal equipment, comprising:
Memory cell is used to store the link information that pre-configured optical line terminal OLT is connected with this PON terminal equipment;
Receiving element is used to receive the broadcast from described OLT, and described broadcast is carried the link information that OLT is connected with this PON terminal equipment;
Processing unit obtains the link information in the described broadcast, and judges whether the link information of storing in the link information obtained and the memory cell is consistent, if it is inconsistent, whether then judge described PON terminal equipment for open-minded first, if, judge that then there is fault in described link for not.
One embodiment of the invention provides a kind of optical line terminal OLT, comprising:
The message constructing unit is used to construct broadcast, carries the link information that this OLT is connected with the PON terminal equipment in the broadcast of being constructed;
Message sending unit, be used for the broadcast of message constructing unit structure is sent to the PON terminal equipment, so that described PON terminal equipment obtains the link information in the broadcast, and link information pre-configured on the link information obtained and the described PON terminal equipment compared, judge the failure condition of the link between described OLT and the described PON terminal equipment according to result relatively.
One embodiment of the invention provides a kind of link failure detection system, comprises optical line terminal OLT and passive optical network PON terminal equipment, and described OLT links to each other with described PON terminal equipment,
Described OLT is used to send broadcast, and described broadcast is carried the link information that described OLT is connected with described PON terminal equipment;
Described PON terminal equipment, be used to receive described broadcast, obtain the link information in the described broadcast, and judge whether the link information of being obtained is consistent with pre-configured link information, if it is inconsistent, whether then judge described PON terminal equipment for open-minded first, if, judge that then there is fault in described link for not.
The link failure detection method that the embodiment of the invention provides, device and system, by in downlink broadcast message, carrying link information, make terminal equipment can obtain the link information in the broadcast, and then the link information obtained and local pre-configured link information compared, judge the failure condition of link to have simple and easy advantage efficiently according to result relatively.
Description of drawings
Fig. 1 is the schematic diagram of the system architecture of existing OLT and ONU/ONT;
The schematic diagram of the system of the link failure detection that Fig. 2 provides for the embodiment of the invention;
The flow chart of the link failure detection method that Fig. 3 provides for the embodiment of the invention;
The schematic diagram of the structure of the PON terminal equipment that Fig. 4 provides for the embodiment of the invention;
The schematic diagram of the structure of the OLT that Fig. 5 provides for the embodiment of the invention.
Specific embodiment
Below in conjunction with accompanying drawing the present invention is carried out clear, complete explanation.
One embodiment of the invention provides a kind of system, the system that is provided can detect link failure, as shown in Figure 2, comprise OLT200 and PON terminal equipment 210, wherein PON terminal equipment 210 can be ONU or ONT (Optical Network Terminal, Optical Network Terminal), also can be other equipment that can discern downlink broadcast message, will be as an example in the present embodiment with ONU/ONT.
OLT200, be used to send broadcast, the broadcast that is sent is carried the link information that PON terminal equipment 210 is connected with OLT200, link information is specially the identification information of the OLT that is connected with PON terminal equipment 210, can be that OLT200 goes up the physical connection sign that is connected with PON terminal equipment 210, sign as the website at OLT200 place, the frame at the PON port place of the last connection of OLT200 PON terminal equipment 210, groove and port-mark etc., also can be that OLT200 goes up the logic connection identifier that is connected with PON terminal equipment 210, as VLAN ID VLAN ID, VPI (Virtual Path Identifier, identifier of the virtual route) and VCI (Virtual Connection Identifier, Identifier of the virtual connection) in the sign at least one such as, it can also be the combination of physical connection sign and logic connection identifier, in following examples, the physical connection of using OLT200 upward to be connected with PON terminal equipment 210 identifies as an example, and in following examples, the last physical connection sign that is connected with PON terminal equipment 210 of OLT200 comprises the sign of the website at OLT200 place, the frame at OLT200 place, groove and OLT200 go up the sign of the port that links to each other with PON terminal equipment 210, those of ordinary skills should, the content that the physical connection sign of using in the present embodiment is comprised does not constitute qualification to scope of the present invention as just for example.
Wherein, the broadcast that OLT sends can be existing GPON PLOAM (Physical LayerOperation, Administration and Maintenance, the physical layer Operation, Administration and Maintenance) message or EPON MPCP (Multi-Point Control Protocol, Multi-point Control Protocol) frame.
The sign of the website at OLT200 place can be the ID or the MAC Address of place website; The frame position that is designated the OLT200 place of the frame position at OLT200 place or groove position or the ID of groove position; The ID that is designated corresponding port of the last port that links to each other with PON terminal equipment 210 of OLT200.
PON terminal equipment 210, be used to receive broadcast from OLT200, obtain the link information in the broadcast, and judge whether the link information of being obtained is consistent with pre-configured link information, if it is inconsistent, whether then judge PON terminal equipment 210 for open-minded first, if, judge that then there is fault in link for not.
Preserve the link information that sets in advance on the PON terminal equipment 210, connect under the normal situation at link, the link information of Bao Cuning should be consistent with the link information of carrying in the message that OLT sends in advance.In the present embodiment, the link information of Bao Cuning comprises the sign of the website at the OLT200 place that links to each other with PON terminal equipment 210, frame position or the sign of groove position and the sign that OLT200 goes up the port that links to each other with PON terminal equipment 210 etc. at OLT200 place in advance.
If PON terminal equipment 210 is for open-minded first, then the link information of preserving on the PON terminal equipment 210 is an initial default value, for example 0xFF, all be 8 or the value of other agreement etc., initial default value is 0xFF in following examples.
PON terminal equipment 210 obtains from the entrained link information of the broadcast of OLT200, these information and local pre-configured link information are compared, if coupling, illustrate that then OLT200 is normal to the link between the PON terminal equipment 210, otherwise, then need to continue to judge that whether PON terminal equipment 210 is for open-minded first, if for open-minded first, illustrate that also OLT200 is normal to the link between the PON terminal equipment 210, if neither be open-minded first, illustrate that then there is fault in the link between OLT200 and the PON terminal equipment 210.
Wherein, judge that whether PON terminal equipment 210 is that the method opened first can be to judge that whether the link information of preserving on the PON terminal equipment 210 is initial default value (such as 0xFF etc.), if be initial default value, illustrate that then PON terminal equipment 210 is for open-minded first.
The system that the embodiment of the invention provides, by carrying link information in the broadcast that sends at OLT, make terminal equipment after receiving this broadcast, compare by the link information that the link information in the broadcast and this locality is pre-configured, thereby can judge fast whether link exists fault.
One embodiment of the invention provides a kind of link failure detection method, this method receives the broadcast that OLT sends by the PON terminal equipment, wherein, broadcast is carried the link information that the PON terminal is connected with OLT, content about link information, described above, in the present embodiment, the physical connection of using OLT upward to be connected with the PON terminal equipment identifies as an example, and in following examples, the last physical connection sign that is connected with the PON terminal equipment of OLT comprises the sign of the website at OLT place, the frame that connects PON port place on OLT of PON terminal equipment, the sign of groove and port; Obtain the link information in the broadcast, and judge whether the link information of being obtained is consistent with pre-configured link information, if it is inconsistent, judge that then whether the PON terminal equipment is for open-minded first, if for denying, judge that then there is fault in described link, wherein, the PON terminal equipment can be OLT or ONT etc.Detailed process is as follows:
The broadcast that OLT sends can be PLOAM message or MPCP frame, and wherein, PLOAM message is applicable to that in the GPON system, the MPCP frame is applicable in the EPON system.
When in the GPON system, adopting PLOAM message, preferred, can take following dual mode to realize:
(1) existing expansion burst length Extended_Burst_Length message is expanded, because 5-12 byte of existing Extended_Burst_Length message is reserved field, therefore, can carry link information by this reserved field, the data structure of the Extended_Burst_Length message after the expansion can be as shown in table 1
Table 1
(2) newly-increased PLOAM message as OLT Information message message, can be carried link information in 3-10 byte, and 11-12 byte is reserved field, and newly-increased OLTInformation message message can be as shown in table 2,
Table 2
When in the EPON system, adopting the MPCP frame, can adopt the form of the existing Discovery Gate frame of expansion, because the PAD/Reserved field at existing Discovery Gate frame is a reserved field, have 27 byte lengths, therefore, can carry the link information of 8Byte in this field, remaining byte length is still reserved, the structure of having carried the PAD/Reserved field of link information can be as shown in table 3
Table 3
After ONU/ONT receives broadcast, resolve the link information of carrying in the broadcast, link information and the local link information that disposes of ONU/ONT that parsing is obtained compare, if consistent, illustrate that then link is normal, execution in step 306, otherwise, execution in step 304.
ONU/ONT judges whether link information pre-configured on the PON terminal equipment is initial default value, such as 0xFF, if be 0xFF, the website that the ONU/ONT place then is described is for open-minded first, illustrate that also OLT is normal to the link between the ONU/ONT, execution in step 306, otherwise, execution in step 308.
The link information of the link failure detection method that present embodiment provides by carrying the OLT that is connected with the PON terminal equipment in the downlink broadcast message that sends at OLT, like this after the PON terminal equipment is received this broadcast, link information in the message and local pre-configured link information can be mated, if do not match then illustrate that there is fault in link, employed method is simple and easy, and easy to operate.
One embodiment of the invention provides a kind of PON terminal equipment, whether the link that the PON terminal equipment that is provided can detect between PON terminal equipment and the OLT exists fault, the PON terminal equipment can be ONU or ONT, also can be other equipment that can discern downlink broadcast message, as shown in Figure 4, PON terminal equipment 400 comprises receiving element 406, memory cell 402, processing unit 408 and display unit 404, wherein
Link information can be that OLT goes up the physical connection sign that is connected with this PON terminal equipment, go up the sign of frame, groove and the PON port at the PON port place that connects this PON terminal equipment as OLT, also can be that OLT goes up the logic connection identifier that is connected with this PON terminal equipment, as in the sign such as VLAN ID, VPI and VCI at least one, can also be the combination of physical connection sign and logic connection identifier.
Receiving element 406, be used to receive broadcast from the OLT that is connected with this PON terminal equipment, carry OLT and the link information that this PON terminal equipment is connected in this broadcast, the link information of carrying in the broadcast in the present embodiment comprises the sign of the website at OLT place, frame position or the sign of groove position and the sign that OLT goes up the port that links to each other with the PON terminal equipment at OLT place.
The PON terminal equipment that present embodiment provides can be by receiving the broadcast that OLT sends, obtain the link information in the broadcast, the link information of obtaining is compared with the local link information that disposes, judge according to result relatively whether link exists fault, by using the PON terminal equipment in the present embodiment, failure condition that can the fast detecting link.
One embodiment of the invention also provides a kind of optical line terminal OLT, the OLT500 that is provided as shown in Figure 5, comprise message constructing unit 501 and message sending unit 503, those of ordinary skills can know that the OLT500 that the embodiment of the invention provided also comprises other unit.
The broadcast of message constructing unit 501 structures can adopt PLOAM message or MPCP frame, employed structure is shown in table 1 or table 2 when adopting PLOAM message, can be the existing Discovery Gate message of expansion when adopting the MPCP frame, concrete extended mode be described above.
Wherein, the PON terminal equipment can be ONU or ONT, and perhaps other can discern the equipment of downlink broadcast message.
The OLT that present embodiment provides can carry link information in the downlink broadcast message that sends, like this, after ONU/ONT receives this broadcast, can compare with the link information of the local configuration of ONU/ONT, thereby judge the failure condition of link, in case information matches can the jumping fiber mistake not appear very fast judgement link, if coupling still still can't be registered, then can be further other fault be detected, such as changing terminal equipment to judge whether being that fault etc. has appearred in terminal equipment, therefore, can be very easily the fault of whole link be detected.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (10)
1. a link failure detection method is characterized in that, comprising:
The passive optical network PON terminal equipment receives the broadcast that optical line terminal OLT sends, and described broadcast is carried the link information that described PON terminal equipment is connected with described OLT;
Obtain the link information in the described broadcast, and judge whether the link information of being obtained is consistent with local pre-configured link information, if inconsistent, judges that then whether described PON terminal equipment is for open-minded first, if, judge that then there is fault in described link for not.
2. method according to claim 1 is characterized in that, described broadcast is physical layer Operation, Administration and Maintenance PLOAM message or Multi-point Control Protocol MPCP frame.
3. method according to claim 1 is characterized in that, described link information is the last physical connection sign that is connected with described PON terminal equipment of described OLT and at least one in the logic connection identifier.
4. method according to claim 3 is characterized in that, described physical connection sign comprises that the sign of the website at described OLT place, described OLT go up the sign of frame, groove and the port at the PON port place that connects described PON terminal equipment.
5. method according to claim 3 is characterized in that, described logic connection identifier comprises at least a in VLAN ID, Identifier of the virtual connection and the identifier of the virtual route.
6. method according to claim 1 is characterized in that, described PON terminal equipment judges whether described PON terminal equipment comprises for opening specifically first:
Described PON terminal equipment judges whether the link information that described PON terminal equipment is stored in advance is initial default value, if for being to judge that then described PON terminal equipment is for open-minded first.
7. a passive optical network PON terminal equipment is characterized in that, comprising:
Memory cell is used to store the link information that pre-configured optical line terminal OLT is connected with this PON terminal equipment;
Receiving element is used to receive the broadcast from described OLT, and described broadcast is carried the link information that OLT is connected with this PON terminal equipment;
Processing unit obtains the link information in the described broadcast, and judges whether the link information of storing in the link information obtained and the memory cell is consistent, if it is inconsistent, whether then judge described PON terminal equipment for open-minded first, if, judge that then there is fault in described link for not.
8. PON terminal equipment according to claim 7 is characterized in that, described PON terminal equipment also comprises display unit, and described display unit is used to show the result of determination of described processing unit.
9. an optical line terminal OLT is characterized in that, comprising:
The message constructing unit is used to construct broadcast, carries the link information that this OLT is connected with the PON terminal equipment in the broadcast of being constructed;
Message sending unit, be used for the broadcast of message constructing unit structure is sent to the PON terminal equipment, so that described PON terminal equipment obtains the link information in the broadcast, and link information pre-configured on the link information obtained and the described PON terminal equipment compared, judge the failure condition of the link between described OLT and the described PON terminal equipment according to result relatively.
10. a link failure detection system comprises optical line terminal OLT and passive optical network PON terminal equipment, and described OLT links to each other with described PON terminal equipment, it is characterized in that,
Described OLT is used to send broadcast, and described broadcast is carried the link information that described OLT is connected with described PON terminal equipment;
Described PON terminal equipment, be used to receive described broadcast, obtain the link information in the described broadcast, and judge whether the link information of being obtained is consistent with pre-configured link information, if it is inconsistent, whether then judge described PON terminal equipment for open-minded first, if, judge that then there is fault in described link for not.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108255.9A CN101931460B (en) | 2009-06-22 | 2009-06-22 | Link fault detection method, device and system |
| PCT/CN2010/071376 WO2010148686A1 (en) | 2009-06-22 | 2010-03-29 | Method, device and system for detecting link failure |
| ES10791192T ES2423842T3 (en) | 2009-06-22 | 2010-03-29 | Method, device and system to detect a link failure |
| EP10791192.7A EP2434666B1 (en) | 2009-06-22 | 2010-03-29 | Method, device and system for detecting link failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108255.9A CN101931460B (en) | 2009-06-22 | 2009-06-22 | Link fault detection method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101931460A true CN101931460A (en) | 2010-12-29 |
| CN101931460B CN101931460B (en) | 2014-06-04 |
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| CN200910108255.9A Active CN101931460B (en) | 2009-06-22 | 2009-06-22 | Link fault detection method, device and system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2434666B1 (en) |
| CN (1) | CN101931460B (en) |
| ES (1) | ES2423842T3 (en) |
| WO (1) | WO2010148686A1 (en) |
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| CN102368720A (en) * | 2011-10-28 | 2012-03-07 | 华为技术有限公司 | Link state detection method, apparatus and system |
| WO2014110707A1 (en) * | 2013-01-15 | 2014-07-24 | 华为技术有限公司 | Method, device, and system for detecting interconnection error |
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| WO2016169405A1 (en) * | 2015-04-20 | 2016-10-27 | 中兴通讯股份有限公司 | Passive optical network identification method and apparatus |
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| WO2017050253A1 (en) * | 2015-09-25 | 2017-03-30 | 中兴通讯股份有限公司 | Method and system for detecting optical line terminal (olt) port |
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| US10819690B2 (en) | 2016-03-04 | 2020-10-27 | Nec Corporation | Communication device and communication method |
| CN108702222B (en) * | 2016-03-04 | 2021-08-24 | 日本电气株式会社 | Communication apparatus and communication method |
| CN112822229A (en) * | 2019-11-18 | 2021-05-18 | 中国电信股份有限公司 | ONU (optical network Unit) fault processing method, ONU, PON (Passive optical network) system and storage medium |
| CN112822229B (en) * | 2019-11-18 | 2022-10-14 | 中国电信股份有限公司 | ONU (optical network Unit) fault processing method, ONU, PON (Passive optical network) system and storage medium |
| CN117411547A (en) * | 2023-12-14 | 2024-01-16 | 武汉长光科技有限公司 | Optical network unit fault positioning method and optical network unit data receiving and transmitting method |
| CN117411547B (en) * | 2023-12-14 | 2024-02-27 | 武汉长光科技有限公司 | Optical network unit fault positioning method and optical network unit data receiving and transmitting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101931460B (en) | 2014-06-04 |
| EP2434666A1 (en) | 2012-03-28 |
| WO2010148686A1 (en) | 2010-12-29 |
| EP2434666A4 (en) | 2012-06-27 |
| ES2423842T3 (en) | 2013-09-24 |
| EP2434666B1 (en) | 2013-05-15 |
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